salisbury



2 Sheets- 81mm 1.

(No Model.)

S G SALISBURY FEED WATER REGULATOR.

Patented Aug. 23, 1881.

ximmwmmml Inventor.

(No Model.) I 2 Sheets-Sheet 2.

' S. O. SALISBURY.

'FEED WATER REGULATOR. No. 246,215. Patented AugLZB, 1881.

NITED STATES PATENT an on.

SILAS Q'SALISBURY, OF NEW YORK, N. Y., ASSIGNOR TO THE AMERICANNON-EXPLOSIVE BOILER ATTACHMENT COMPANY, OF SAME PLACE.

FEED-WATER REGULATOR.

SPECIFICATION forming part of Letters Patent No. 246,215, dated August23, 1881.

' Application filed May 23, 1881. (No model.)

To allwltom it may concern:

Be it known that I, SILAS OovnL SALIS- BURY, of the city, county, andState of New York, have invented a new and useful way of controlling theadmission of feed water to steam generators; and I. do hereby declarethat the following is a full and exact description of the same.

It is a desideratum in steam-generators to secure a continuous feedexactly graduated to the evaporation in the boiler, because suchcontinuous feed will relieve the boiler-plates from the great andunequal strains to which they are subjected by the sudden fluctuationsof temperature due to an irregular or intermittent introduction of coldwater. The desired regularity of feed can only be obtained by automaticmeans, and so far as Iam aware has never been attained heretofore.

My invention consists in an automatic regulatingwalie in the steam-pipe,which supplies steam to operate the feed-water pump, whereby the actionof'said pump is made directly dependent upon the state of the water inthe boiler, whereby, when the engine is running or steam is beingexpended, the water-feed will be automatically commenced, and when theapparatus is in proper adjustment made continuous and exactlyproportioned to the ex- 0 penditure of steam. When several boilers arecoupled in one bench, although the steampressure may be uniform in themall, the actual evaporation and height of water may differ in theseveral boilers. These boilers may all be 55 fed by a single pump, butthe admission of feed-water to each must be separately controlled.Therefore, while the gross evaporation from all the boilers may be themeasure for the gross supply, the subdivision of that supply will be thesubject of "separate treat ment.

My invention therefore also consists in a feed-pipe common to severalboilers and regulating-gates in the lateral pipes from said feedpipe tothe several boilers, said gates being operated by mechanism controlledby the water within the boiler. There are also other minor points ofnovelty, which will be pointed out hereinafter.

showing the valve.

'itatone point as at another.

That others may fully understand my improvement,1 will more particularlydescribe it, having reference to the accompanying drawings, wherein-Figure lis a sectional perspective of a bench of boilers with myinvention attached. Fig. 2 is a transverse section of the steam-dome,Fig. 3 is a longitudinal section of the boiler. Fig. 4 is a similarsection, showng the feed-water. Fig. 5 shows a modification in themounting of the steamo0 valve. Fig. 6 shows the feed-water valveenlarged.

A is the boiler, and it may be of any appropriate pattern or mode ofconstruction.

B is the steam-pipe, which takes steam to the pump whereby thefeed-water is forced into the boiler.

G is the valve-seat at the inner end of the steam-pipe B, and D is thecone-valve fittedto said seat. The seat C may be placed trans- 7o Verseto the inlet end of pipe B, or in line with it, as may be desired. Whentransverse it is' open at each end, so that there will not be any placein the valve-case for a lodgment for obstructing matter. The valve D isaccurately fitted to the valve-seat C, so that when it is fully seatedtherein the pipe B will be fully and securely closed; but when the valveis partly withdrawn steam may escape, and the volume permitted to passwill be exactly proportioned to the movement. of thevalve. The valve D,being placed transversely across the pipe B, will. therefore beeli'ectually balanced and require the same amountof force to move 8 Thevalve D is mounted at the end of a le 5 ver, E, the fulcrum whereof maybe supported by a bracket, F, and at its opposite endsaid lever isprovided with a float, G, which rests upon the surface of the water andrises or falls 0 with every change of the level of the same, so thatwhen the water-surface sinks the float G causes the valve D to open, andwhen the surface rises with the admissionof more water the float risesalso and closes the valve D.-- "g 5 valves will become obstructed withsilt more readily with somoavaters than with others; and it may beimportant to make the valveseat easily removable for cleansing orrepairs. This may be accomplished by inserting the valve-seat throughthe shell of the boiler from the outside, as shown in Figs. 3 and 5. Itmay then be easily removed and replaced.

The valve-lever E is pivoted to a bracket within the boiler, and thefloat may be restrained from side swaying by a guide-rod, I, or by otherproper means.

It may be desirable sometimes to open the steam-valve D while the'wateris still high, and I have therefore provided a valve-stem, J, whichprojects through a stuffing-box and is accessible from the outside.

It has also been found desirable to counterpoise the float, in order toincrease its steadiness and to promptly counteract any tendency of thevalve to stick, because the float being very light its gravityis notequal to the weight of the water which it may displace, and therefore itdoes not act downwardwith a force equal to its upward thrust when thewater rises in the boiler. The desired counterpoise may be obtained by aspring, K, or a weighted lever outside the boiler.

In some cases several boilers are coupled in one bench and fed by onepump which is kept constantly in motion forcing water through afeed-pipe, L, which is provided with short branch pipes and valves Mcommunicating with each boiler. In Fig. 1 one of said branches only isshown. I then provide an outside lever, P, which is connected at one endwith the float-lever E within the boiler, and atits outer end it isattached to a valve or gate, M, in the feed-water pipe L, usual] y infront of the boiler. By this means the quantity of water admitted toeach boiler is controlled entirely by the position of the water-leveland float within the boiler, so that the feed of each of several boilersfrom one feed-water pipe common to them allwill be automaticallyself-regulated.

Having described myinventiou,what I claim as new is- 1. Combined with asteam-generator, a balanced cone-valve transverse to the portof thesteam-pipe, whereby steam passes to operate the feed-pump, and acontrolling-lever fulcrum and float governed by the height of water inthe generator, as fully set forth.

2. A steam-generator and a feed-pump connected therewith tosupply saidgenerator with water, combined with mechanism automatically controlledby the height of the waterlevel to govern the quantity of steam suppliedto said feed-pump, and thereby make the water-feed dependent upon andcontrolled by the quantity of water being evaporated.

3. A lever within the boiler pivoted to a fulcrum attached to the shellof the boiler, and provided with a controlling-float at one end of saidlever, and an automatic valve at the other end, also within the boiler,to control the escape of steam to the feed-pump, combined with a stemextending from said valve through the shell of the boiler, whereby saidvalve may be moved from the outside either to open or close said valveindependent of the float.

4. A lever within the boiler pivoted to afulcrum attached to the shellof the boiler, and provided with a controlling-float at one end, an automatic valve at the other end, also within the boiler, and a stemextending from said valve through the shell of the boiler, combined witha counterpoise spring or weight, whereby the drop of the float andmovement of the valve may be assured and sticking effectually prevented.

5. In a bench of boilers coupled together, and a feed-pump and pipecommon to them all, a valve in the steam-pipe which supplies steam tothe pump, controlled automatically, as described, combined with valve Min said feedpipe, also automatically controlled, as set forth, wherebythe action of the pump may be controlled by the gross evaporation andthe water-feed may be proportioned to the evaporation in each boilerseparately.

6. Combined with a steam-generator, a balanced cone-valve, D, transverseto the port of the steam-pipe B, whereby steam passes to operate thefeed-pump, and a controlling-lever and float governed by the height ofwater in the generator, as set forth.

SILAS GOVEL SALISBURY. Witnesses: I

HENRY DIES, Bop. WILs'oN.

